Perfluorovinyl compounds

Details Perfluorovinyl compounds Perfluorovinyl compounds

C - Chemistry, Metallurgy

07

C

400/4222, 260/44

C07C 43/225 (2006.01) C07C 22/08 (2006.01) C07C 43/17 (2006.01) C07C 65/21 (2006.01) C07C 69/92 (2006.01) C07C 323/20 (2006.01) C07F 7/08 (2006.01) C08F 236/16 (2006.01)

Patent

CA 2030792

The present invention is directed to a compounds having at least two perfluorovinyl groups and having a structure represented by the following Formula I: Formula I CF2=CF-X-R-(X-CF=CF2)m wherein R represents an unsubstituted or inertly substituted hydrocarbyl group; each X is independently selected from the group consisting of groups having at least one non-carbon atom between R and -CF=CF2; and m is an integer of from 1 to 3. Polymers formed from such compounds are also prepared. The compounds are preferably prepared by a method by a process comprising the steps of: (a) forming a salt having anion corresponding to a compound of the following Formula II: Formula II HX-R-(XH)m; wherein X, R and m are as defined for Formula I; (b) reacting the salt formed in step (a) with a 1,2-dihalo-1,1,2, 2-tetrafluoroethane wherein the halo groups are iodine, bromine, chlorine or mixtures thereof, at least one halo group being bromine or iodine, to form a compound of the following Formula III: Formula III Z-CF2CF2-X-R-(X-CF2CF2-Z)m wherein X, R and m are as defined for Formula I and each Z is independently iodine or bromine; and (c) eliminating the halogen atoms represented by Z to form the perfluorovinyl compound represented by Formula I.

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